Evaluate > Iso Angle

Displays iso-angle lines on surfaces. This lets you visually evaluate continuity across surface boundaries. You can also use this tool to create iso-angle curves-on-surface.

Procedures

Show iso-angle lines on a surface

Iso Angle Control options

Type of Bands

Controls whether iso-angle lines are white (Single) or colored (Multiple).

Width

The width of white band iso-angle lines. This option is only available if Type of Bands is Single.

Number of Bands

The number of times colored band iso-angle lines are repeated on each surface. This option is only available if Type of Bands is Multiple.

Shaded Surfaces

Controls whether iso-angle lines are displayed as shaded lines (checked) or not (unchecked).

Create Curves

Check this box to display iso-angle lines as curves-on-surface. Select the type of curves from the options below.

Curve Type

Controls whether Visual curves-on-surface are created from iso-angle lines, or actual Geometry curves-on-surface. The latter can be used for modeling operations such as geometry creation, trimming, or measuring.

Note: If Construction History Updates During Transforms is turned on (in Preferences > Performance Options), curves-on-surface temporarily become visual curves during the interactive updates to provide faster redraw. This does not happen if the curves-on-surface have locators on them, are used in trimming, or if the transformation requires the tessellation to be recomputed (for example, in Transform CV).

Tolerance

When Visual is selected as the Curve Type, this value defines the quality of the visual curves independently of the tessellation tolerance. This lets you set the visual tolerance to a smaller value to get better quality visual curves, without reducing the tessellation tolerance used for shading.

Blur

The blurriness of iso-angle line edges. This option is only available if Shaded surface is on.

Vector

The position of the vector represented by the arrow icon (light source).

Transparency

The transparency of surfaces with iso-angle lines.

Control Options

Create History

Save the history of Geometry curves-on-surface for later editing. If you turn Create History on, you can modify the surfaces and the curves-on-surface update.